<template>
	<view class="my-settle-container">
		<!-- 全选 -->
		<label class="radio" @click="changeAllState">
			<radio color="#c00000" :checked="isFullCheck" /><text>全选</text>
		</label>

		<!-- 合计 -->
		<view class="amount-box">
			合计 : <text class="amount"> ¥ {{ checkedGoodsAmount }}</text>
		</view>

		<!-- 结算按钮 -->
		<view class="btn-settle" @click="settlement">结算({{ checkedCount }})</view>
	</view>
</template>

<script>
import { mapGetters, mapMutations, mapState } from 'vuex';

export default {
	name: 'my-settle',
	data() {
		return {
			// 倒计时的秒数, 默认 3 秒
			seconds: 3,
			// 定时器的 Id
			timer: null,
		};
	},
	computed: {
		...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
		...mapGetters('m_user', ['addstr']),
		...mapState('m_user', ['token']),
		...mapState('m_cart', ['cart']),
		// 判断全选按钮的布尔属性
		isFullCheck() {
			return this.total === this.checkedCount;
		},
	},
	methods: {
		...mapMutations('m_cart', ['updateAllGoodsState']),
		...mapMutations('m_user', ['updateRedirectInfo']),
		changeAllState() {
			this.updateAllGoodsState(!this.isFullCheck);
		},

		// 用户点击结算按钮
		settlement() {
			if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品');

			if (!this.addstr) return uni.$showMsg('请选择收获地址');

			// 判断用户是否登录, 延时跳转到 my 页面
			if (!this.token) return this.delayNavigate();

			// 调用支付方法
			this.payOrder();
		},
		// 支付的方法
		async payOrder() {
			// 1.创建订单
			// 1.1阻止订单的信息对象
			const orderInfo = {
				// 这是真实的总价格
				// order_price: this.checkedGoodsAmount,
				// 这是测试用的固定价格
				order_price: 0.01,
				consignee_addr: this.addstr,
				goods: this.cart
					.filter((x) => x.goods_state)
					.map((x) => ({
						goods_id: x.goods_id,
						goods_number: x.goods_count,
						goods_price: x.goods_price,
					})),
			};

			// 1.2发起请求创建订单
			const { data: res } = await uni.$http.post(
				'/api/public/v1/my/orders/create',
				orderInfo
			);

			if (res.meta.status !== 200) return uni.$showMsg('创建订单失败');

			// 1.3得到服务器响应的"订单编号"
			const orderNumber = res.message.order_number;

			// console.log(orderNumber);

			// 2.订单预支付
			// 2.1 发起请求获取订单的支付信息
			const { data: res2 } = await uni.$http.post(
				'/api/public/v1/my/orders/req_unifiedorder',
				{
					order_number: orderNumber,
				}
			);

			// 2.2 预付订单生成失败
			if (res2.meta.state !== 200) return uni.$showMsg('预付订单生成失败');

			// 2.3得到订单支付相关的必要参数
			const payInfo = res2.message.pay;
			// console.log(payInfo);

			// 3. 发起微信支付
			// 3.1 调用 uni.requestPayment() 发起微信支付
			const [err, succ] = await uni.requestPayment(payInfo);
			// 3.2 未完成支付
			if (err) return uni.$showMsg('订单未支付');
			// 3.3 完成了支付, 进一步查询支付的结果
			const { data: res3 } = uni.$http.post('/api/public/v1/my/orders/chkOrder', {
				order_number: orderNumber,
			});
			// 3.4 检测到订单未支付
			if (res3.meta.status !== 200) return uni.$showMsg('订单未支付');
			// 3.5 检测到订单支付完成
			uni.showToast({
				title: '订单支付完成',
				icon: 'success',
			});
		},
		// 延时导航到 my 页面
		delayNavigate() {
			this.seconds = 3;

			this.showTips(this.seconds);

			this.timer = setInterval(() => {
				this.seconds--;

				if (this.seconds <= 0) {
					clearInterval(this.timer);

					uni.switchTab({
						url: '/pages/my/my',
						success: () => {
							this.updateRedirectInfo({
								openType: 'switchTab',
								from: '/pages/cart/cart',
							});
						},
					});
					return;
				}

				this.showTips(this.seconds);
			}, 1000);
		},
		// 展示倒计时的提示消息
		showTips(n) {
			uni.showToast({
				icon: 'none',
				title: '请登录后再结算!' + n + '秒之后自动跳转到登录页',
				// 防止用户的点击穿透
				mask: true,
				// 自动消失的倒计时时间
				duration: 1500,
			});
		},
	},
};
</script>

<style lang="scss">
.my-settle-container {
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	height: 50px;
	background-color: white;
	display: flex;
	justify-content: space-between;
	align-items: center;
	font-size: 14px;
	padding: 5px;
}
.radio {
	display: flex;
	align-items: center;
}
.amount-box {
	.amount {
		color: #c00000;
		font-weight: bold;
	}
}
.btn-settle {
	background-color: #c00000;
	height: 50px;
	color: white;
	line-height: 50px;
	padding: 0 10px;
	min-width: 100px;
	text-align: center;
}
</style>
